How to optimize MapReduce Job?
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How is mapreduce related to cloud computing?
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
What is a distributed cache in mapreduce framework?
Explain job scheduling through JobTracker
What is a combiner and where you should use it?
What is a map side join?
What is Combiner in MapReduce?
When should you use sequencefileinputformat?
What is the Hadoop MapReduce API contract for a key and value Class?
How would you tackle calculating the number of unique visitors for each hour by mining a huge apache log? You can use post processing on the output of the mapreduce job.
what happens in textinformat ?
How does MapReduce framework view its input internally?
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